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Finding the Fourth Proportional to 98,830.60, 148,245.90 and 43,426.60

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Solution

The fourth proportional to 98,830.60, 148,245.90 and 43,426.60 is: 65,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,830.60 : 148,245.90 = 43,426.60 : x
  2. Step 2: Convert to fraction form
    98,830.60/148,245.90 = 43,426.60/x
  3. Step 3: Cross multiply
    98,830.60x = 148,245.90 × 43,426.60
  4. Step 4: Simplify right side
    98,830.60x = 6,437,815,400.94
  5. Step 5: Solve for x
    x = 6,437,815,400.94/98,830.60
  6. Step 6: Final answer
    x = 65,139.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.